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Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events
I want to remove null=True from a TextField:
5 Answers
5
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Where to learn about VS debugger 'magic names'
...this")
5 --> a hoisted local in an iterator
6 --> the hoisted locals from an outer scope
7 --> a hoisted wrapped value ("wrap")
8 --> the closure class instance ("locals")
9 --> the cached delegate instance ("CachedAnonymousMethodDelegate")
a --> the iterator instance ("iterator")
...
Make Bootstrap Popover Appear/Disappear on Hover instead of Click
...I use data-attributes, I still would have to call $("#popover").popover(); from my JavaScript.
– Bailey
Jan 3 '18 at 7:58
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Anonymous recursive PHP functions
...ght not be a simple approach, but I learned about a technique called "fix" from functional languages. The fix function from Haskell is known more generally as the Y combinator, which is one of the most well-known fixed point combinators.
A fixed point is a value that is unchanged by a function: a ...
What does it mean for a data structure to be “intrusive”?
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An intrusive data structure is one that requires help from the elements it intends to store in order to store them.
Let me reword that. When you put something into that data structure, that "something" becomes aware of the fact that it is in that data structure, in some way. Ad...
How to copy a local Git branch to a remote repo
...acks being uploaded. It looks like the remote already has all the material from your earlier push; it just has to be hooked in to the refs.
– Kaz
Mar 23 '12 at 2:25
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Reload an iframe with jQuery
...rameId);
iframe.src = iframe.src;
If you are trying to reload the iframe from another iframe, you are out of luck, that is not possible.
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What is a reasonable code coverage % for unit tests (and why)? [closed]
...age with three different
answers. Why?”
The great master stood up from his
chair:
“Come get some fresh tea with me and let’s talk about it.”
After they filled their cups with
smoking hot green tea, the great
master began to answer:
“The first programmer is new a...
How to un-escape a backslash-escaped string?
...ings. The following works for Python3 in all cases, as far as I can tell:
from codecs import encode, decode
sample = u'mon€y\\nröcks'
result = decode(encode(sample, 'latin-1', 'backslashreplace'), 'unicode-escape')
print(result)
As outlined in the comments, you can also use the literal_eval me...
AsyncTask threads never die
...cTask manages a thread pool, created with ThreadPoolExecutor. It will have from 5 to 128 threads. If there are more than 5 threads, those extra threads will stick around for at most 10 seconds before being removed. (note: these figures are for the presently-visible open source code and vary by Andro...